A man weighing 450 N sits on a platform suspended from a movable pulley and raises himself by a rope passing over a fixed pulley. Assuming the ropes parallel, what force does he exert?
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Expert's answer
2020-12-06T17:32:04-0500
For this arrangement, ignoring friction, stiffness of the rope, etc, upward force on the platform will be twice the force on the man's hand.
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